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High temperature and high pressure corrosion hydrogen permeation kinetics test device and test method

A test device, high temperature and high pressure technology, applied in the direction of measuring device, applying stable tension/pressure to test material strength, weather resistance/light resistance/corrosion resistance, etc., can solve the problem of inability to detect hydrogen permeation, and reduce the amount of experiments Effect

Active Publication Date: 2017-05-17
湖州度信科技有限公司
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  • Description
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiency that the hydrogen permeation detection device in the prior art cannot detect the amount of hydrogen permeation while applying a load to the sample, and to provide a method that can measure materials under the coupled action of corrosion hydrogen permeation and fatigue load High-temperature and high-pressure hydrogen permeation dynamics test device and test method that can test the critical fatigue load of materials in a short period of time

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  • High temperature and high pressure corrosion hydrogen permeation kinetics test device and test method
  • High temperature and high pressure corrosion hydrogen permeation kinetics test device and test method
  • High temperature and high pressure corrosion hydrogen permeation kinetics test device and test method

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0061] Such as figure 1 , Figure 4 , Figure 5 The shown embodiment is a high-temperature and high-pressure corrosion hydrogen permeation kinetics test device, the test device is respectively connected with the electrochemical workstation 1, the oil bath controller 2 and the fatigue testing machine 3, and the fatigue testing machine is equipped with two parts for connecting the sample. The upper clamp 4 and the lower clamp 5 at the end; comprise a hydrogen sulfide tank, a nitrogen tank, a buffer tank 6 filled with 0.2mol / L NaOH solution, and a reactor 7 arranged on a fatigue testing machine; the reactor includes a first tank with an upper end opening Body 8 and the first still cover 9 that is sealingly connected with the first still body, the dissolving liquid that is used to dissolve hydrogen sulfide gas is provided in the first still body;...

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Abstract

The invention discloses a high temperature and high pressure corrosion hydrogen permeation kinetic test device and a test method of the device. When the device is used for carrying out fatigue limit measurement, step type fatigue load is applied to material from small to large under the given corrosion condition after hydrogen permeability current is stable; when the hydrogen permeability current is increased along with the increment of the load, the load is proved to cause dislocation movement in the material, so that the load is the fatigue limit of the material in the environment. After the device and the method are adopted, the quantitative relation between a fatigue load state and hydrogen permeation quantity can be measured in situ in an online way in the high pressure hydrogen sulfide corrosion environment, the internal relation between stress and segregation diffusion of hydrogen can be visually expressed, and the characteristics of the mutual relation of multiple data can be established.

Description

technical field [0001] The invention relates to the technical field of high-temperature and high-pressure corrosion hydrogen permeation testing, in particular to a high-temperature and high-pressure hydrogen permeation that can measure the fracture form of materials under the coupled action of corrosion hydrogen permeation and fatigue load, and can test the critical fatigue load of materials in a short time Kinetic testing device and testing method. Background technique [0002] With the development of the economy, the human demand for oil, natural gas and other resources is gradually increasing. In recent years, the price of oil has risen year by year. The huge demand has driven the vigorous development of the oil industry. The number of sour oil and gas fields has increased year by year. Hydrogen sulfide, carbon dioxide gas, and acidic substances will corrode mining and transportation equipment, posing a huge threat to the safe development of oil and gas fields. Once the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02G01N3/08
Inventor 张林黄秋彦周成双
Owner 湖州度信科技有限公司
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